An overnight investigation into a mailbox vandalism ended with suspects arrested for throwing rocks off a bridge onto Interstate 40 traffic, deputies said.

An overnight investigation into a mailbox vandalism ended with suspects arrested for throwing rocks off a bridge onto Interstate 40 traffic, deputies said.

The case also resulted in a confession involving the destruction of 100 mailboxes in rural Pottawatomie County.

Undersheriff Travis Palmer said the investigation began late Monday night when a resident witnessed suspects destroy a mailbox. The resident obtained tag information from a vehicle and made a report, Palmer said, with Deputy Bob Stewart making a traffic stop of that vehicle in the area of I-40 and SH 9A.

From an investigation, it appeared those in the vehicle had split from another group that had allegedly gone to throw rocks off the Econtuchka bridge, Palmer said.

Deputies took reports of vehicle damage to three tractor-trailer rigs on I-40, he said, which led deputies to track down three suspects — two adults and a juvenile — in that matter.

Palmer said Tyler Crandle, 18, and Todd Gale, 18, were arrested on complaints of dropping or throwing objects onto a motor vehicle and malicious injury to property. Formal charges have not been filed.

The third suspect, a 17-year-old, also was taken into custody, he said.

During the ordeal, Palmer said the group allegedly confessed involvement in damaging at least 100 mailboxes around the area this past month, which would involve destruction of private property charges.

All case reports will be turned over to the district attorney’s office.